rename group->current_group. swap p_statement doctoring to match imp.
make test is now verbose for spotting logging output next to each test name
now raise syntax error in cases where ply was swallowing it
simplify unused code
todo, whitespace, logging
add boolean values
use concise declaration of literal chars
first unit test of nested groups works
more tests for nested groups. all pass already. yay.
move a test
todo floats
strings are now unicode_decoded
add tests for arrays of bools, strings, datetimes
add tests for comments after statements
arrays now deal correctly with trailing comma (valid) and preceding comma (invalid)
split up the composite production rules for simpler code
go crazy testing for newlines within array brackets